If you have arachnophobia, then move along. Nothing for you here.

I think what may cause such 'quiltwork' is dependant on the variety of spider that did it. Your basic household spiders probably produce a simple webbing that's probably skinnier than a single strand of your hair. But the webs displayed in that website's images are probably done by spiders who can produce thicker webbing.

And to have time for such work, the spider itself must have some lifespan. Supposedly lengthier than your average household spider. As well as durability vs cold temperatures and other weather conditons.

All theoretical of course. I don't know enough about spiders to confirm anything for sure. But it sure is something to think about if you're questioning the existance of such 'quiltwork'.

How ya doing, buddy?